Supplemental barrel for guns.



Patented Aug. 22, I899.

Nu. 63l,399

n. B. GILLETTE.

SUPPLEMENTAL BARREL FOR GUNS;

(A nmm fllgd Ian. at, was.

(No Model.)

avvvemlioz li rwmB. Gillette.

Rel/us Pulls mm wAsnmUnN a c thereof too high to make it suitable forshoothill-TE,

STATES" ATQE T; Fries,

SUPPLEMENTAL BARREL oe eons.

SPECIFIGAIIICN ionising part of Letters Eatent No. 631,399, dated-August 22, 1899.

Application filed January 3 1, 1898. Serial No. 668,810. lilo model.)

,To. all z'phom it-mriy concern/1 Be it known that I, Emmi B. GILLETTE,.a' oitigen of the United States, residing at Rosenurg, in'the county ofDouglas and State of Oregon, have invented certain new and useiulImprovements in Firearms; and I do herebydeclare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled'in theartto-which it appertains to makeand-use the same.

My invention relates to 'impro'venients in that class of firearms whichare technically known 'as br och-loading small-arms, and moreparticularly to the subclass of rifles.

The object of my invention is to provide an attachment for suchaweaponwhereby it may The desirability'of such an attachment will be atonce apparent, and numerous efforts have been made and devices proposedfor ac complishing the object of this inventionthat is, manufacturersand users of guns and rifles have long seen the desirability ofproviding means whereby, for example, a sportsman could readily adapt agun of large caliberfor the recepiion'cf small light-charge cartridges.4

It frequently happens that the charge or cartridge required bythe'sizeof the chamber at the breech elf-the gun-barrel is so heavy andexpensive as to render the weapon useless for the purpose for which itis desired to use the same. Thus the charge or cartridge required to beused with a thirty-two to forty caliber rifle, for example, is too heavyand the cost ing small game or gallery-target practice. Various deviceshave, as above stated, been proposed for attachment to such a gun aswill adapt it to receive and use cartridges or charges much smaller thanthose normally employed; but to all of these that are known to mecertain'objections have been incident, t overcome which is the object ofmy present invention,

The invention consists in the peculiar con- 1 structionand arrangementof parts that will be hereinafter fully, pointed out.

In the accompanying drawings I have illustrated'an embodiment of myinvention, in which- I Figure l is a "view,'par,tly in section, ofabreech-loading" gun having my improvements applied thereto. Fig.. 2 is adetail view of the supplemental tube orauxiliary barrel-or chamberdetached from the gun. Fig; 3 is a similar View of aslightly-modifiedform. Fig. 4 is a detail perspective view of a portion of thegun-barrel, showingthe means for detacln ing the said auxiliarytube fromthe gun. Fig. 5 is-a similar view showing a modification of'theparts'showniu Fig. 4, Fig. 6 is a longitudinal sectional view throughthe aux: iliary tube or chamber shown in Fig. 2,a cartridgebeiug'represented in position for use parts ofthe aux iliartube-extracting mechanism.

. 7 therein. Fig; 7 illustrates the members or Like letters andnunieralsof reference denote corresponding parts in the several figures of thedrawings, referring to which- A designates a tube or, as it may betermed, chamber which is adapted to be inserted in thecartridge bed orchamber formed at the breech end of the gun-barrel. This cartridge bedor chamber is somewhat larger in diameter than the bore of the barrel toaccommodate the shell or casing oi: the cartridge, the ball of whichprojects forwardly from the said bed into and is of the same caliber asthe barrel. I

The embodiment of my invention herein illustrated is particularlyadapted for use in guns of that style in which the cartridge is oflongitudinally-tapcriug form,- and therefore the bed or chamber providedfor its reception at the breech of the barrel increases indiaineter fromits forward end rearwardly.

This gives to the tube A, which is made of such shape and exteriordimensions as to fit snugly in the said cartridge-bed, a frustoconicalform. It is made of auysuitable ma too 2 ee1,see

spending in size to and adapted to fit within the seat provided at thebreech end of the cartridge-bed for the reception of the rim tained inthe tube A until that was withdrawn from the gun or said shell could bedislodged by means, such as cleaning-rod, not specially designed forthat purpose.

The here or passage in the tube A is no of uniform size or diameterthroughout its length, as is clearly shown in Figs. 1 and 6. At itsforward end it is of the same size as the bore of the gun-barrel, thesaid end of the tube being at that end of the thickness of the walls ofthe shell or casing of the cartridge commonly used in the gun at thesame point, and said bore in the auxiliary tube is of this same size fora considerable portion of its length-namely, from said front endrearwardly to the line a; w in Fig. 6. From this point to its rear endit isshaped to provide a bed or chamber .for the reduced charge orcartridge B. This cartridge, it will be noticed, is similar in form tothat ordinarily employed, the only diiference between it and the onewhich would lit the cartridge-bed of the gun being its length, andconsequently its width at its rear end. A suitable countersunk seat a isformed at the breech end of the tube A to receive the flange or rim b atthe end of the cartridge B, so that when the tube A and cartridge B arein position for, use the center of the rear end of said cartridgeoccupies the same position as does the center of the corresponoing endof the cartridge specially designed for the gun.

Owing to the peculiar form of the bore or passage in the auxiliary tubeand the exterior tapering shape thereof it will be seen that the wallsof the said "tube increase in thickness from the forward end to thebreech end. My invention, as aforesaid, also includes means mountedonthe fghn Wherebythe'said auxiliary tube-or reducing-chamber can beeasily withdrawn from the breech. of the barrel when the occasion forits use has passed and it is desired to restore the gun to its normal ororiginal condition. In the embodiment of the invention hereinillustrated these consist of devices such as are shown in Figs. 4:, 5,and 7 of the drawings.-

'Referring particularly to Figs. at and 7, C designates the gun-barrel,which is shown as being of octagonal form in cross-section. D designatesthe breech end of such barrel, and the aforesaid auxiliary tube A isshown in position therein. In a longitudinal groove formed in the barrel(3 and opening through the breech end thereof is arranged an arm or bar1, which is capable of a limited longitudinal movement in said groove orway. At its rear end it is provided with :1. depending lug 2, the lowerfree end of which is reduced, asat 3. This lug occupies normally aposition in front of but in line with the above-described annular rim orflange at the breech end of the tube A, and when said bar or rod 1 ismoved rear; wardly said lug acts to force the tube A from the cartridgebed or chamber of the gun. Such longitudinal movement of the bar 1maybeaccomplished by various means. In the embodiment of the inventionillustrated in Figs. 4 and 7 such movement is efiected by means of alever 4, which is fulcrumed on the barrel 0 and normally lies closeagainst the same throughout its length. On the under side of said lever4 concentric with its fulcrum are formed a series of teeth, which meshwith a rack-like portion of the bar or arm 1, so that when the longerarm of the lever 4; is raised said but will be moved toward the breechoi the gun and the auxiliary tube A ejected therefrom.

If desired, a ring or band, such as shown in Fig. 5 encircling orsurrounding the barrel 0, may be employed for moving the ejectorbar 1instead of the lever 4.

The bore of the auxiliary tube in advance of its cartridge bed orchamber maybe either smooth or rifled, as desired. As pointed out,

this portion of said tube forms a continuation of the gun-barrel, andtherefore, if rifled, the riding will he made to conform to that of thebarrel with which'it is to be employed.

The manner of using my improvements will, itis believed, he clearlyunderstood from the foregoing description and the drawings.

It will be noticed that I provide means permanently mounted on the gunfor ejecting or removing the auxiliary tube, thus avoiding the necessityfor using special tools, such as wrenches, for that purpose or forcingthe tube out by means of a rod inserted through the muzzle oi thebarrel, which proceeding is liable to damage both the auxiliary tube andthe riding of the gun-barrel.

As before stated,- myimprovements are particularly adapted for use withrifles; but, as will be apparent, many of the features will be of useand can be applied to smooth-bore guns.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1.' The combination with a'breech-loading firearm, of a tubular receiveradapted to be dinally-movable arm mounted on the gunbarrel'and adaptedto engage with said receiver, and means for moving said arm to cause itto force the said. receiver from the 5 gun, substantially as set forth.

3. The com bination of a gun or firearm and a short or auxiliary chamberhavinga notched and countersunk flange or rim on its rear end and aretractor or ejector for the auxiliary- 1o chamber comprising a slidingarm with an angular rear end and a lug thereon, and at lever on theexterior surface of the gnu-barrel for operating the sliding arm,substantially as described.

In testimony whereof I affix my signature :5 in presence of twowitnesses. HIRAM B. GILLETTE. [L. s.]

Witnesses:

E. D. STRATFORD, SIMON Cum).

It is. hereby certified that in Letters Patent No. 631,399, grantedAugust 22, 1899,

upon the application of Hiram B. Gillette, of Roseburg, Oregon, for animprovement in Supplemental Barrels for. Guns, an error appears in theprinted specification requiring correction, as follows: In line 18, page1, the word light should read large;

and that the said Letters Patent should be read with this correctiontherein that.

the samemay confiorm to the record of the case in the Patent Oflice.

Signed, countersigned, and sealed this 5th day of December, A. 1).,1899.

[sEAL.] WEBSTER DAVIS, Assistant Secretary of the Interior.Counters'igned:

C. H. DUELL,

- Commissioner of Patents.

Correction in Letters )Paterit No. 631

It is, hereby certified that in Letters Patent No. 631,399, grantedAugust 22, 1899,

upon the application of Hiram B. Gillette, of Roseburg, Oregon, for animprovement ii1 Supplemental Barrels for. Guns, an error appears in theprinted specification requiring correction, as follows: In line 18, page1, the word light should read-large;

and that the said Letters Patent should be read with this correctiontherein that.

a the wan a a eonform to the record of the case in the Pater lt Oflice.

Signed, oountersigned; and sealed this 5th day of I )ecember, A. 1).,1899.

[an-m] WEBSTER DAVIS, Assistant Seeretary of the Interior.Oounters'igned:

0. H. DUELL,

- Commissioner of Patents.

